Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine continues a legendary standard in precision tuning with an upgraded 1:18 gear ratio for exceptionally smooth and reliable operation. Every component is CNC-machined to exacting tolerances, featuring brass posts meticulously fitted into the housing to ensure long-term tuning stability and wear-free performance.
Equipped with an innovative stepped M6 flanged washer, this machine head simplifies headstock installation by reliably centering the post via the banjonut, eliminating the need for a stepped peghead bore while removing tilt torque and lateral pressure from the string post and rear fixing screw.
Permanently lubricated with Schaller special grease for maintenance-free service, the M6 135 retains the identical footprint of its predecessor for seamless retrofitting and drop-in replacement on compatible guitars.
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjonut |
| Button Borehole | Diameter 0.17 in (4.2 mm) with drive flat 0.14 in (3.6 mm) |
| Brand | Schaller |
| Series | M6 Series |
| Manufacturer | Schaller GmbH |
| Post Material | Brass |
| Product Weight | 0.79 lb |





















